the fbi was called in and this man 44-year-old fbi agent dean elston was put in charge of the investigation. >> i had two questions i had to ask him right then. one was would frank do this just to get some publicity? he said dean, he would never do this to his mother. the next thing i asked him, do you think the mob has had any connection with the kidnapping? he said no. >> on monday morning in los angeles, my mother actress barbara rush arrived on the warner brother's lot to resume filming robin and the 7 hoods. >> the choreographer came out and said barbara, something has happened, mr. sinatra had to leave and we are not going to shoot the scene today and this was a musical number and i said we are not the going to do it today and she said no, because frank, jr. had been kidnapped and i said he's been kidnapped? frank sinatra's son has been kidnapped you must be joking! >> that morning crazed kidnapper barry keenan decided to drive the nearly 500 miles back to lake tahoe to check out of his hotel and get rid of any lingering evidence. frank sinatra, jr. remained in the hideout. >> he was